Tyler Vigen has created a website (Spurious Correlations) which show correlations between completely unrelated data. All of the graphs are totally bogus, but hilarious to look and think about. It’s very much the pirates and global warming effect – global warming has increased as the population of pirates has decreased. It hasn’t, of course, but it’s pretty easy to correlate two unrelated sets of data together to “prove” an argument. Tyler explains it fairly well in the above video.

Did you know, the per capita consumption of mozzarella cheese (US) correlates with Civil engineering doctorates awarded (US)?